Yeah Dan it seems wide. That's with the pull start and fan shroud, muffler, gas tank and air cleaner. It's an OHV so I think it's a Honda clone. I can't tell by the pic online but I'm sure (I looked at it IRL several months ago) it has the drain screw on the carb bowl.
That 3600 RPM rating is governed speed. The throttle on a governed engine does not directly move the throttle plate in the carb. It usually varies spring pressure on the governor, with a reserve higher RPM capability to overcome differences in load. We can tap that reserve capability.
Properly set up, you can have a standard throttle grip
and Cruise Control! There is a caveat, though. Hitting the brakes will not release "cruise". We'll have to make sure the kill switch (that works) is close to our right thumb.
With a set of the old friction shifters on the top tube, we can have auxiliary throttle (Cruise Control) and choke levers. This will be almost true cruise control. Head up a hill and throttle opens up to keep speed constant. Thing is, heading downhill it will stay at 3600.

It will back off the throttle but won't close it completely.
These engines are designed for generators. They will run day in day out. Cast iron cylinder sleeve. Low oil shutdown. Ball bearing shaft. For less than $80 dollars you can't beat it.
Ted